Skip to main content

Full text of "Alaskan glacier studies of the National Geographic Society in the Yakutat Bay, Prince William Sound and lower Copper River regions"

See other formats


PLATE CLXXXI
A.   VIEW IN TEE BROADER MIDDLE PORTION OF THE COPPER RIVER CANYON Upper limit of glaciation near a, a, below which the slopes are smoothed by glacial erosion. Photograph by E. A. Hegg.


B.   THE COPPER RIVER IN ITS MARGINAL CHANNEL Precipitous eastern wall of canyon on left and Allen Glacier on right.